Table 2 Comparison of the number of multiplications between the previous and the proposed schemes according to N
From: Iterative detection for frequency-asynchronous distributed Alamouti-coded (FADAC) OFDM
N | Previous (frequency domain) | Proposed (time domain) | Proposed/previous |
|---|---|---|---|
64 | 4096 | 1024 | 0.25 |
128 | 16,384 | 2304 | 0.14 |
256 | 65,536 | 5120 | 0.07 |
512 | 262,144 | 11,264 | 0.04 |
1024 | 1,048,576 | 24,576 | 0.02 |